Inside The September 11th Memorial Museum

The National September 11 Memorial Museum is viewed(L) next to One WTC 9World Trade Center) during a media tour May 13, 2014 of the WTC site after a press conference and a symposium event to talk about the documentary "16 ACRES & BEYOND: Inside the Struggle to Rebuild Ground Zero" in New York. Discussion topics include the controversies behind the impending 9/11 Museum, the role of media coverage in the rebuilding process, the role of Port Authority, and the evolution of the surrounding neighborhood and its relationship to the site, in addition to the potential challenges, controversies, and battles that lie ahead. The National September 11 Memorial Museum will open to the general public on May 21. AFP PHOTO / Timothy A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: A destroyed fire department ambulance from Ground Zero is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders ,workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20.
On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: An American Flag recovered from the World Trade Center site is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders ,workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

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HelmetS worn by New York City Fire Department Firefighter Christian Waugh on September 11, 2001,are seen during a press preview of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: Handmade missing posters of victims of September 11 are viewed during a tour of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders ,workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: A wall with a quote from Virgil and featuring 2,983 panels for each victim is viewed during a tour of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders ,workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: Artifacts from Ground Zero, including part of a television and radio antenna from the North Tower, is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders ,workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: Artifacts from Ground Zero, including an elevator motor from one of the buildings, is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: Artifacts from Ground Zero, including part of a television and radio antenna from the North Tower, is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders ,workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: A salvaged section of steel facade from the North Tower from Ground Zero is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders ,workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: A firefighters shirt used at Ground Zero on September 11 is viewed during a tour the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders ,workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: The destroyed Ladder 3 fire truck is viewed during a tour of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: A firefighters shirt used at Ground Zero on September 11 is viewed during a tour the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: People tour the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: People tour the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: People tour the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: People tour the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: A decorated pillar from Ground Zero and the Slurry Wall are viewed during a tour of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

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The "Survior Stairs", remnants of a Vesey Street staircase where many people who worked at the World Trade Center towers during the September 11, 2001 attack escaped to the street, seen during a press preview of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

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An exhibit about the September 11, 2001 attack on the Pentagon, seen during a press preview of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

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Detail of objects found after the September 11, 2001 attack on the Pentagon, seen during a press preview of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: A pair of eye glasses recovered from Ground Zero are viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: Dust, ash and debris from the collapsed Twin Towers are viewed on the clothes from the store Chelsea Jeans in an exhibit at viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: A recovery mask used by a burn victim from the attacks on September 11 is viewed during a tour of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: Artifacts from Ground Zero are viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: Cards, patches and mementos of those killed at Ground Zero are are viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: The only World Trade Center presentation model still in existence is viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: Surviving firefighter Dan Potter's fire helmet, which he used at Ground Zero on September 11, is viewed during a tour the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: Artifacts from Ground Zero are are viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

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Workers prepare for the opening of the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

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A model of the World Trade Center buildings, seen during a press preview in the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

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Escalators going up to street level past a section of steel facade from the North Tower, floors 96 to 99, (L) seen during a press preview in the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

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A detail of a World Trade Center "trident", a steel column that formed part of the building's structural support, seen during a press preview in the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

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A sign in an exhibit about the aftermath of the September 11, 2001 attacks, seen during a press preview in the National September 11 Memorial Museum at the World Trade Center site May 14, 2014 in New York. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: The bullhorn President George W. Bush used to speak to first responders and the public at Ground Zero on September 14 is viewed during a tour the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: A decorated pillar from Ground Zero and the Slurry Wall are viewed during a tour of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

New September 11th Memorial Museum Holds Preview For Media

NEW YORK, NY - MAY 14: Pictures of some of the September 11 hijackers are viewed during a preview of the National September 11 Memorial Museum on May 14, 2014 in New York City. The long awaited museum will open to the public on May 21 following a six-day dedication period for 9/11 families, survivors, first responders, workers, and local city residents. For the dedication period the doors to the museum will be open for 24-hours a day from May 15 through May 20. On Thursday President Barack Obama and the first lady will attend the dedication ceremony for the opening of the museum. While the construction of the museum has often been fraught with politics and controversy, the exhibitions and displays seek to pay tribute to the 2,983 victims of the 9/11 attacks and the 1993 bombing while also educating the public on the September 11 attacks on the World Trade Center, the Pentagon and in Pennsylvania. (Photo by Spencer Platt/Getty Images)

9/11 Memorial Museum Officially Opens

NEW YORK, NY - MAY 15: Two tridents from the original World Trade Center loom inside the National September 11 Memorial Museum as the new One World Trade Center rises outside during the opening ceremony for the museum at ground zero May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from the hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by Allan Tannenbaum-Pool/Getty Images)

9/11 Memorial Museum Officially Opens

NEW YORK, NY - MAY 15: The last steel beam, that was ceremonially removed from ground zero, is displayed during the opening ceremony for the National September 11 Memorial Museum at ground zero May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from the hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by Tim Clary-Pool/Getty Images)

9/11 Memorial Museum Officially Opens

NEW YORK, NY - MAY 15: A section of the "slurry wall," the surviving retaining wall of the original World Trade Center is displayed during the opening ceremony for the National September 11 Memorial Museum at ground zero May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from the hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by Tim Clary-Pool/Getty Images)

9/11 Memorial Museum Officially Opens

NEW YORK, NY - MAY 15: The last steel beam, that was ceremonially removed from ground zero, is displayed during the opening ceremony for the National September 11 Memorial Museum at ground zero May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from the hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by Tim Clary-Pool/Getty Images)

9/11 Memorial Museum Officially Opens

NEW YORK, NY - MAY 15: Actor Robert De Niro attends the opening ceremony for the National September 11 Memorial Museum at ground zero May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from the hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by Tim Clary-Pool/Getty Images)

NEW YORK, NY - MAY 15: A steel beam from the World Trade Center stands at the center of Foundation Hall where the dedication ceremony will take place later this morning at the National September 11 Memorial Museum May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from a hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by John Munson-Pool/Getty Images)

NEW YORK, NY - MAY 15: The honor guard comprised of members of the FDNY, NYPD, and PAPD prepare prior to the dedication ceremony at the National September 11 Memorial Museum May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from a hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (John Munson-Pool/Getty Images)

9/11 Memorial Museum Officially Opens

NEW YORK, NY - MAY 15: The National September 11 Memorial Museum stands beyond the north reflecting pool during the opening ceremony for the museum at ground zero May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from the hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by Justin Lane-Pool/Getty Images)

NEW YORK, NY - MAY 15: Honor Guards comprised of members of FDNY, NYPD, and PAPD during National Anthem during the dedication ceremony at the National September 11 Memorial Museum May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from a hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by Chang W. Lee-Pool/Getty Images)

NEW YORK, NY - MAY 15: Family and friends of 9/11 victims cry while U.S. President Barak Obama talks about Welles Crowther who scarified himself to save others during the dedication ceremony at the National September 11 Memorial Museum May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from a hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by Chang W. Lee-Pool/Getty Images)

NEW YORK, NY - MAY 15: New Jersey Governor Chris Christie greets Port Authority Police Officer David Lim before the dedication ceremony at the National September 11 Memorial Museum May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from a hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by John Munson-Pool/Getty Images)

NEW YORK, NY - MAY 15: U.S. President Barak Obama speaks during the dedication ceremony at the National September 11 Memorial Museum May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from a hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by Chang W. Lee-Pool/Getty Images)

9/11 Memorial Museum Officially Opens

NEW YORK, NY - MAY 15: U.S. President Barack Obama speaks during the opening ceremony for the National September 11 Memorial Museum at ground zero May 15, 2014 in New York City. The museum spans seven stories, mostly underground, and contains artifacts from the attack on the World Trade Center Towers on September 11, 2001 that include the 80 ft high tridents, the so-called "Ground Zero Cross," the destroyed remains of Company 21's New York Fire Department Engine as well as smaller items such as letter that fell from the hijacked plane and posters of missing loved ones projected onto the wall of the museum. The museum will open to the public on May 21. (Photo by Tim Clary-Pool/Getty Images)